A:Answer ANSWER:
1. I've had generally good performance of squashing the soap opera effect out of this TV. I've had mixed results with some inputs (streaming HBO off my XBOX) but I can't confirm if the juddering is the TV or the source (the streaming).
I've watched a 4K movie (Terminator Genysis) on UltraFlix which was true 4K and was able to squash the soap opera effect pretty well.
Overall, I'd say this TV is good, not excellent when it comes to Motion Blur and Judder settings.
ANSWER:
2. This TV supports DLNA but I have not used. I did use PLEX and my Chromecast, but neither of those were 4K that I could confirm. PLEX looked a lot better than the Chromecast which was guaranteed 1080p, so maybe it was steaming in 2160p?
MY WORKAROUND:
I found a way to download 4K movies off YouTube and play those files off a USB stick and the files look excellent on the TV. Only pain in this is that you must convert the files to H.265 format which is slow so load up the queue and convert overnight.
SUGGESTED WORKAROUND:
Get a Roku 4K and cast to that. The Roku 4K supports YouTube 4K streaming while the VIZIO smart tv portion does not.
Hope my replies helped.
